Updated power patches

[Reuben Thomas <rrt@...>]

I've updated all my Power Patches to Lua 5.1.4. (Actually, only one of
the patches, which were all previously for Lua 5.1.2, failed to
apply.) In the process I removed some unnecessary whitespace changes
from a couple of them, so they're shorter and more readable than they
used to be.

All at:

http://lua-users.org/wiki/LuaPowerPatches

Most are backwards compatible, providing useful functionality like
better signal handling (use sig_catch, so no more need to press Ctrl-C
twice to halt a script waiting for input), printing of NULs, readline
history saving and having the interpreter starting up without paying
attention to environment variables. These patches are all tiny (~20
lines) and may be of interest to packagers as well as users. There are
two more adventurous patches, one to prevent automatic conversion
between strings and numbers, and the other to remove varargs (this
last is new to the wiki).

-- 
http://rrt.sc3d.org
L’art des vers est de transformer en beautés les faiblesses (Aragon)